TOPIC Chiral Optomechanics 
AREA Microwave & RF 
SPEAKER Professor Etienne BRASSELET, Head of SINGULAR group (https://www.loma.cnrs.fr/equipe-singular/Laboratoire Ondes et Matière d’Aquitaine, CNRSUniversity of Bordeaux, France  
DATE 6 November 2014, Thursday 
TIME 10:00 am to 11:00 am 
VENUE E1-06-01, Engineering Blk E1, Faculty of Engineering, NUS 
FEES No Charge 

SYNOPSIS
Optical radiation forces are the mechanical manifestation of the transfer of the linear momentum of light to matter, which basically occurs when light is reflected, refracted, scattered, or absorbed in the course of its propagation. To exploit the angular momentum degree of freedom of the light to control the mechanical effects that results from its linear momentum is an intriguing challenge that we address experimentally since two years. I will present some of our recent developments that have been obtained by using a model system that practically consists of chiral liquid crystal droplets under the action of a chiral light field. This includes several experimental demonstrations such as helicity controlled optical radiation pressure, optical sorting of material chirality and selective three-dimensional optical trapping of chiral objects. 

ABOUT THE SPEAKER
Etienne Brasselet is a CNRS researcher at University of Bordeaux. Since 2011, he leads the SINGULAR group at “Laboratoire Onde et Matière d’Aquitaine”, which focuses on light-matter interaction in presence of wave or material singularities. His research interests include optical vortices, optical forces and torques, optofluidics, spin-orbit interaction of light, and liquid crystal topological defects. 

REMARKS, IF ANY
Etienne Brasselet is a CNRS researcher at University of Bordeaux. Since 2011, he leads the SINGULAR group at “Laboratoire Onde et Matière d’Aquitaine”, which focuses on light-matter interaction in presence of wave or material singularities. His research interests include optical vortices, optical forces and torques, optofluidics, spin-orbit interaction of light, and liquid crystal topological defects. 

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All are welcome to attend these Seminars. Should you have any enquiries, please contact Ms. Lily Png at 6516 6509 or you can e-mail to Ms Lily Png ().